501978867772 has 24 divisors (see below), whose sum is σ = 917433431712. Its totient is φ = 239873515200.

The previous prime is 501978867739. The next prime is 501978867791. The reversal of 501978867772 is 277768879105.

It is a junction number, because it is equal to n+sod(n) for n = 501978867698 and 501978867707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2201379 + ... + 2418682.

It is an arithmetic number, because the mean of its divisors is an integer number (38226392988).

Almost surely, 2^501978867772 is an apocalyptic number.

It is an amenable number.

501978867772 is a deficient number, since it is larger than the sum of its proper divisors (415454563940).

501978867772 is a wasteful number, since it uses less digits than its factorization.

501978867772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621269 (or 4621267 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 67.

The spelling of 501978867772 in words is "five hundred one billion, nine hundred seventy-eight million, eight hundred sixty-seven thousand, seven hundred seventy-two".